Pith Number

pith:QELFTAW3

pith:2014:QELFTAW3IWVQ5WPQQZLLE4V7YP

not attested not anchored not stored refs pending

The mysterious sdO X-ray binary BD+37 442

A. Irrgang, D. Schneider, I. Barbu-Barna, N. La Palombara, S. Geier, S. Mereghetti, U. Heber

arxiv:1404.6971 v1 · 2014-04-28 · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QELFTAW3IWVQ5WPQQZLLE4V7YP}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:53:05.436300Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81165982db45ab0ed9f08656b272bfc3eb01f2ad5f37ef8e3dfcd84bad8e7eb3

Aliases

arxiv: 1404.6971 · arxiv_version: 1404.6971v1 · doi: 10.48550/arxiv.1404.6971 · pith_short_12: QELFTAW3IWVQ · pith_short_16: QELFTAW3IWVQ5WPQ · pith_short_8: QELFTAW3

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/QELFTAW3IWVQ5WPQQZLLE4V7YP \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 81165982db45ab0ed9f08656b272bfc3eb01f2ad5f37ef8e3dfcd84bad8e7eb3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b4de11723fc81f19baf40433158055520659df5067828b8229d12e75c76e505a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2014-04-28T13:21:29Z",
    "title_canon_sha256": "b4a03098a48c8154e3ed3a3e9043f88e5f2938c5194bea8766f66ece1e2272a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.6971",
    "kind": "arxiv",
    "version": 1
  }
}